排除前区:04,05,09,11,12,26,33,35=0-1
排除后区:01,03,05,06
B:龙头凤尾:
龙头关注:01或10
凤尾关注:24或32
C:前区方案:
a-10码:01,10,17,18,19,20,22,23,24,32
b-14码:01,02,07,10,17,18,19,20,22,23,24,27,29,32
c-18码:01,02,07,10,13,14,16,17,18,19,20,22,23,24,27,28,29,32
D:后区方案:
后区2码:07,09
后区4码:07,09,11,12
后区6码:02,07,08,09,11,12